23121323 has 4 divisors (see below), whose sum is σ = 23918640. Its totient is φ = 22324008.

The previous prime is 23121283. The next prime is 23121331. The reversal of 23121323 is 32312132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23121323 - 2¹⁰ = 23120299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23127323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398615 + ... + 398672.

It is an arithmetic number, because the mean of its divisors is an integer number (5979660).

Almost surely, 2^23121323 is an apocalyptic number.

23121323 is a deficient number, since it is larger than the sum of its proper divisors (797317).

23121323 is an equidigital number, since it uses as much as digits as its factorization.

23121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797316.

The product of its digits is 216, while the sum is 17.

The square root of 23121323 is about 4808.4636839639. The cubic root of 23121323 is about 284.8858597006.

Adding to 23121323 its reverse (32312132), we get a palindrome (55433455).

It can be divided in two parts, 2312132 and 3, that multiplied together give a palindrome (6936396).

The spelling of 23121323 in words is "twenty-three million, one hundred twenty-one thousand, three hundred twenty-three".